Index: sys/netgraph/ng_eiface.c
===================================================================
--- sys/netgraph/ng_eiface.c
+++ sys/netgraph/ng_eiface.c
@@ -412,7 +412,7 @@
 	ifp->if_start = ng_eiface_start;
 	ifp->if_ioctl = ng_eiface_ioctl;
 	ifp->if_snd.ifq_maxlen = ifqmaxlen;
-	ifp->if_flags = (IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST);
+	ifp->if_flags = (IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | IFF_KNOWSEPOCH);
 	ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU;
 	ifp->if_capenable = IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU;
 	ifmedia_init(&priv->media, 0, ng_eiface_mediachange,